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Full-length genome sequence analysis of a Hungarian porcine reproductive and respiratory syndrome virus isolated from a pig with severe respiratory disease

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Abstract

Here, we report the isolation of a type 1 porcine reproductive and respiratory syndrome virus (PRRSV) strain from a clinical outbreak of severe respiratory problems and high fever. Next-generation sequencing was used to determine the complete genome sequence of the isolate (9625/2012). The virus belongs to a new branch within subtype 1, clade D, and shows the highest similarity to PRRSV Olot/1991 and to the Amervac vaccine strain. Mutation analysis of 9625/2012 revealed no evidence of recombination but did show a high proportion of amino acid substitutions in the putative neutralizing epitopes, suggesting an important role of selective immune pressure in the evolution of PRRSV 9625/2012.

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Acknowledgments

This paper was supported by the János Bolyai Research Scholarship of the Hungarian Academy of Sciences and by the OTKA fund (OTKA K-108607). We would like to thank Amelia Sidwell for her grammatical suggestions.

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Correspondence to Ádám Bálint.

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Bálint, Á., Balka, G., Horváth, P. et al. Full-length genome sequence analysis of a Hungarian porcine reproductive and respiratory syndrome virus isolated from a pig with severe respiratory disease. Arch Virol 160, 417–422 (2015). https://doi.org/10.1007/s00705-014-2265-2

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